2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2005, Alex Foobarian <foobarian@gmail.com>
5 * Copyright (C) 2003-2007, Evan Battaglia <gtoevan@gmx.net>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <glib/gi18n.h>
32 /* functions common to all layers. */
33 /* TODO longone: rename interface free -> finalize */
35 extern VikLayerInterface vik_aggregate_layer_interface;
36 extern VikLayerInterface vik_trw_layer_interface;
37 extern VikLayerInterface vik_maps_layer_interface;
38 extern VikLayerInterface vik_coord_layer_interface;
39 extern VikLayerInterface vik_georef_layer_interface;
40 extern VikLayerInterface vik_gps_layer_interface;
41 extern VikLayerInterface vik_dem_layer_interface;
47 static guint layer_signals[VL_LAST_SIGNAL] = { 0 };
49 static GObjectClass *parent_class;
51 static void layer_class_init ( VikLayerClass *klass );
52 static void layer_init ( VikLayer *vl );
53 static void layer_finalize ( VikLayer *vl );
54 static gboolean layer_properties_factory ( VikLayer *vl, VikViewport *vp );
57 /* TODO longone: rename vik_layer_init -> set_type */
59 GType vik_layer_get_type ()
61 static GType vl_type = 0;
65 static const GTypeInfo vl_info =
67 sizeof (VikLayerClass),
69 NULL, /* base_finalize */
70 (GClassInitFunc) layer_class_init, /* class init */
71 NULL, /* class_finalize */
72 NULL, /* class_data */
75 (GInstanceInitFunc) layer_init /* instance init */
77 vl_type = g_type_register_static ( G_TYPE_OBJECT, "VikLayer", &vl_info, 0 );
83 static void layer_class_init (VikLayerClass *klass)
85 GObjectClass *object_class;
87 object_class = G_OBJECT_CLASS (klass);
89 object_class->finalize = (GObjectFinalizeFunc) layer_finalize;
91 parent_class = g_type_class_peek_parent (klass);
93 layer_signals[VL_UPDATE_SIGNAL] = g_signal_new ( "update", G_TYPE_FROM_CLASS (klass),
94 G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (VikLayerClass, update), NULL, NULL,
95 g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
99 * Invoke the actual drawing via signal method
101 static gboolean idle_draw ( VikLayer *vl )
103 g_signal_emit ( G_OBJECT(vl), layer_signals[VL_UPDATE_SIGNAL], 0 );
104 return FALSE; // Nothing else to do
108 * Draw specified layer
110 void vik_layer_emit_update ( VikLayer *vl, gboolean from_background )
113 vik_window_set_redraw_trigger(vl);
115 // Only ever draw when there is time to do so
116 if ( from_background )
117 // Drawing requested from background thread, so handle via the gdk thread method
118 gdk_threads_add_idle ( (GSourceFunc) idle_draw, vl );
120 g_idle_add ( (GSourceFunc) idle_draw, vl );
125 * should only be done by VikLayersPanel (hence never used from the background)
126 * need to redraw and record trigger when we make a layer invisible.
128 void vik_layer_emit_update_although_invisible ( VikLayer *vl )
130 vik_window_set_redraw_trigger(vl);
131 g_idle_add ( (GSourceFunc) idle_draw, vl );
134 /* doesn't set the trigger. should be done by aggregate layer when child emits update. */
135 void vik_layer_emit_update_secondary ( VikLayer *vl )
138 // TODO: this can used from the background - eg in acquire
139 // so will need to flow background update status through too
140 g_idle_add ( (GSourceFunc) idle_draw, vl );
143 static VikLayerInterface *vik_layer_interfaces[VIK_LAYER_NUM_TYPES] = {
144 &vik_aggregate_layer_interface,
145 &vik_trw_layer_interface,
146 &vik_coord_layer_interface,
147 &vik_georef_layer_interface,
148 &vik_gps_layer_interface,
149 &vik_maps_layer_interface,
150 &vik_dem_layer_interface,
153 VikLayerInterface *vik_layer_get_interface ( gint type )
155 g_assert ( type < VIK_LAYER_NUM_TYPES );
156 return vik_layer_interfaces[type];
159 static void layer_init ( VikLayer *vl )
163 vl->realized = FALSE;
166 void vik_layer_init ( VikLayer *vl, gint type )
172 void vik_layer_rename ( VikLayer *l, const gchar *new_name )
174 g_assert ( l != NULL );
175 g_assert ( new_name != NULL );
177 l->name = g_strdup ( new_name );
180 void vik_layer_rename_no_copy ( VikLayer *l, gchar *new_name )
182 g_assert ( l != NULL );
183 g_assert ( new_name != NULL );
188 const gchar *vik_layer_get_name ( VikLayer *l )
190 g_assert ( l != NULL);
194 VikLayer *vik_layer_create ( gint type, gpointer vp, GtkWindow *w, gboolean interactive )
196 VikLayer *new_layer = NULL;
197 g_assert ( type < VIK_LAYER_NUM_TYPES );
199 new_layer = vik_layer_interfaces[type]->create ( vp );
201 g_assert ( new_layer != NULL );
205 if ( vik_layer_properties ( new_layer, vp ) )
206 /* We translate the name here */
207 /* in order to avoid translating name set by user */
208 vik_layer_rename ( VIK_LAYER(new_layer), _(vik_layer_interfaces[type]->name) );
211 g_object_unref ( G_OBJECT(new_layer) ); /* cancel that */
218 /* returns TRUE if OK was pressed */
219 gboolean vik_layer_properties ( VikLayer *layer, gpointer vp )
221 if ( vik_layer_interfaces[layer->type]->properties )
222 return vik_layer_interfaces[layer->type]->properties ( layer, vp );
223 return layer_properties_factory ( layer, vp );
226 void vik_layer_draw ( VikLayer *l, gpointer data )
229 if ( vik_layer_interfaces[l->type]->draw )
230 vik_layer_interfaces[l->type]->draw ( l, data );
233 void vik_layer_change_coord_mode ( VikLayer *l, VikCoordMode mode )
235 if ( vik_layer_interfaces[l->type]->change_coord_mode )
236 vik_layer_interfaces[l->type]->change_coord_mode ( l, mode );
245 void vik_layer_marshall ( VikLayer *vl, guint8 **data, gint *len )
248 if ( vl && vik_layer_interfaces[vl->type]->marshall ) {
249 vik_layer_interfaces[vl->type]->marshall ( vl, data, len );
251 header = g_malloc(*len + sizeof(*header));
252 header->layer_type = vl->type;
254 memcpy(header->data, *data, *len);
256 *data = (guint8 *)header;
257 *len = *len + sizeof(*header);
264 void vik_layer_marshall_params ( VikLayer *vl, guint8 **data, gint *datalen )
266 VikLayerParam *params = vik_layer_get_interface(vl->type)->params;
267 VikLayerFuncGetParam get_param = vik_layer_get_interface(vl->type)->get_param;
268 GByteArray* b = g_byte_array_new ();
271 #define vlm_append(obj, sz) \
273 g_byte_array_append ( b, (guint8 *)&len, sizeof(len) ); \
274 g_byte_array_append ( b, (guint8 *)(obj), len );
276 vlm_append(vl->name, strlen(vl->name));
278 if ( params && get_param )
281 guint16 i, params_count = vik_layer_get_interface(vl->type)->params_count;
282 for ( i = 0; i < params_count; i++ )
284 g_debug("%s: %s", __FUNCTION__, params[i].name);
285 d = get_param(vl, i, FALSE);
286 switch ( params[i].type )
288 case VIK_LAYER_PARAM_STRING:
289 vlm_append(d.s, strlen(d.s));
292 /* print out the string list in the array */
293 case VIK_LAYER_PARAM_STRING_LIST: {
296 /* write length of list (# of strings) */
297 gint listlen = g_list_length ( list );
298 g_byte_array_append ( b, (guint8 *)&listlen, sizeof(listlen) );
300 /* write each string */
302 gchar *s = (gchar *) list->data;
303 vlm_append(s, strlen(s));
310 vlm_append(&d, sizeof(d));
318 g_byte_array_free ( b, FALSE );
323 void vik_layer_unmarshall_params ( VikLayer *vl, guint8 *data, gint datalen, VikViewport *vvp )
325 VikLayerParam *params = vik_layer_get_interface(vl->type)->params;
326 VikLayerFuncSetParam set_param = vik_layer_get_interface(vl->type)->set_param;
328 guint8 *b = (guint8 *)data;
330 #define vlm_size (*(gint *)b)
331 #define vlm_read(obj) \
332 memcpy((obj), b+sizeof(gint), vlm_size); \
333 b += sizeof(gint) + vlm_size;
335 s = g_malloc(vlm_size + 1);
339 vik_layer_rename(vl, s);
343 if ( params && set_param )
346 guint16 i, params_count = vik_layer_get_interface(vl->type)->params_count;
347 for ( i = 0; i < params_count; i++ )
349 g_debug("%s: %s", __FUNCTION__, params[i].name);
350 switch ( params[i].type )
352 case VIK_LAYER_PARAM_STRING:
353 s = g_malloc(vlm_size + 1);
357 set_param(vl, i, d, vvp, FALSE);
360 case VIK_LAYER_PARAM_STRING_LIST: {
361 gint listlen = vlm_size, j;
363 b += sizeof(gint); /* skip listlen */;
365 for ( j = 0; j < listlen; j++ ) {
367 s = g_malloc(vlm_size + 1);
370 list = g_list_append ( list, s );
373 set_param(vl, i, d, vvp, FALSE);
374 /* don't free -- string list is responsibility of the layer */
380 set_param(vl, i, d, vvp, FALSE);
387 VikLayer *vik_layer_unmarshall ( guint8 *data, gint len, VikViewport *vvp )
391 header = (header_t *)data;
393 if ( vik_layer_interfaces[header->layer_type]->unmarshall ) {
394 return vik_layer_interfaces[header->layer_type]->unmarshall ( header->data, header->len, vvp );
400 static void layer_finalize ( VikLayer *vl )
402 g_assert ( vl != NULL );
403 if ( vik_layer_interfaces[vl->type]->free )
404 vik_layer_interfaces[vl->type]->free ( vl );
407 G_OBJECT_CLASS(parent_class)->finalize(G_OBJECT(vl));
410 /* sublayer switching */
411 gboolean vik_layer_sublayer_toggle_visible ( VikLayer *l, gint subtype, gpointer sublayer )
413 if ( vik_layer_interfaces[l->type]->sublayer_toggle_visible )
414 return vik_layer_interfaces[l->type]->sublayer_toggle_visible ( l, subtype, sublayer );
415 return TRUE; /* if unknown, will always be visible */
418 gboolean vik_layer_selected ( VikLayer *l, gint subtype, gpointer sublayer, gint type, gpointer vlp )
420 if ( vik_layer_interfaces[l->type]->layer_selected )
421 return vik_layer_interfaces[l->type]->layer_selected ( l, subtype, sublayer, type, vlp );
422 /* Since no 'layer_selected' function explicitly turn off here */
423 return vik_window_clear_highlight ( (VikWindow *)VIK_GTK_WINDOW_FROM_LAYER(l) );
426 void vik_layer_realize ( VikLayer *l, VikTreeview *vt, GtkTreeIter *layer_iter )
429 l->iter = *layer_iter;
431 if ( vik_layer_interfaces[l->type]->realize )
432 vik_layer_interfaces[l->type]->realize ( l, vt, layer_iter );
435 void vik_layer_set_menu_items_selection(VikLayer *l, guint16 selection)
437 if ( vik_layer_interfaces[l->type]->set_menu_selection )
438 vik_layer_interfaces[l->type]->set_menu_selection ( l, selection );
441 guint16 vik_layer_get_menu_items_selection(VikLayer *l)
443 if ( vik_layer_interfaces[l->type]->get_menu_selection )
444 return(vik_layer_interfaces[l->type]->get_menu_selection (l));
446 return(vik_layer_interfaces[l->type]->menu_items_selection);
449 void vik_layer_add_menu_items ( VikLayer *l, GtkMenu *menu, gpointer vlp )
451 if ( vik_layer_interfaces[l->type]->add_menu_items )
452 vik_layer_interfaces[l->type]->add_menu_items ( l, menu, vlp );
455 gboolean vik_layer_sublayer_add_menu_items ( VikLayer *l, GtkMenu *menu, gpointer vlp, gint subtype, gpointer sublayer, GtkTreeIter *iter, VikViewport *vvp )
457 if ( vik_layer_interfaces[l->type]->sublayer_add_menu_items )
458 return vik_layer_interfaces[l->type]->sublayer_add_menu_items ( l, menu, vlp, subtype, sublayer, iter, vvp );
463 const gchar *vik_layer_sublayer_rename_request ( VikLayer *l, const gchar *newname, gpointer vlp, gint subtype, gpointer sublayer, GtkTreeIter *iter )
465 if ( vik_layer_interfaces[l->type]->sublayer_rename_request )
466 return vik_layer_interfaces[l->type]->sublayer_rename_request ( l, newname, vlp, subtype, sublayer, iter );
470 const gchar* vik_layer_sublayer_tooltip ( VikLayer *l, gint subtype, gpointer sublayer )
472 if ( vik_layer_interfaces[l->type]->sublayer_tooltip )
473 return vik_layer_interfaces[l->type]->sublayer_tooltip ( l, subtype, sublayer );
477 const gchar* vik_layer_layer_tooltip ( VikLayer *l )
479 if ( vik_layer_interfaces[l->type]->layer_tooltip )
480 return vik_layer_interfaces[l->type]->layer_tooltip ( l );
484 GdkPixbuf *vik_layer_load_icon ( gint type )
486 g_assert ( type < VIK_LAYER_NUM_TYPES );
487 if ( vik_layer_interfaces[type]->icon )
488 return gdk_pixbuf_from_pixdata ( vik_layer_interfaces[type]->icon, FALSE, NULL );
492 gboolean vik_layer_set_param ( VikLayer *layer, guint16 id, VikLayerParamData data, gpointer vp, gboolean is_file_operation )
494 if ( vik_layer_interfaces[layer->type]->set_param )
495 return vik_layer_interfaces[layer->type]->set_param ( layer, id, data, vp, is_file_operation );
499 void vik_layer_post_read ( VikLayer *layer, VikViewport *vp, gboolean from_file )
501 if ( vik_layer_interfaces[layer->type]->post_read )
502 vik_layer_interfaces[layer->type]->post_read ( layer, vp, from_file );
505 static gboolean layer_properties_factory ( VikLayer *vl, VikViewport *vp )
507 switch ( a_uibuilder_properties_factory ( _("Layer Properties"),
508 VIK_GTK_WINDOW_FROM_WIDGET(vp),
509 vik_layer_interfaces[vl->type]->params,
510 vik_layer_interfaces[vl->type]->params_count,
511 vik_layer_interfaces[vl->type]->params_groups,
512 vik_layer_interfaces[vl->type]->params_groups_count,
513 (gpointer) vik_layer_interfaces[vl->type]->set_param,
516 (gpointer) vik_layer_interfaces[vl->type]->get_param,
523 vik_layer_post_read ( vl, vp, FALSE ); /* update any gc's */